Volume Estimation Tool (VET)

Volume Estimation Tool (VET)

When designing a submarine, one of the most important design requirements is achieving neutral buoyancy. An accurate estimate of the weight and volume of a design is of great importance when evaluating the buoyancy of a submarine design. Nevesbu has developed a special tool, named the Volume Estimation Tool (VET), with which a suitable starting point for the main dimensions, volume and sub-volumes of a diesel-electric submarine can be quickly determined in the early design phases. In 2017, the tool has won a Dutch maritime innovation award.

When it comes to volume estimation, the main challenge is the lack of reference data available. Much of the information that is available to the public is unreliable. However, if the data is all falsified in the same manner, it is possible to distinguish a trend in the data which can be considered valid despite the inaccuracy of the reference data itself. This is done using the Theil-Sen regression method. A trend line can be created by calibrating the trend found by using this method to the value of a known submarine design. The advantage of using this method is that it becomes possible to give the obtained values meaning, as the implicit design choices of the calibration design are known.

The estimation of principal dimensions requires a different approach. Principal dimensions are determined by the dimensions of critical objects inside the pressure hull. It is done in this way because the geometric requirements cannot be directly scaled due to the internal arrangement. When comparing different submarine designs, a pattern of common critical items can be distinguished. By parameterising the dimensions of the critical item, the minimum required local pressure hull diameter can be determined. This is where the volume estimation is integrated into the geometric estimation.

Learn more abotut the Volume Estimation Tool in this video.

Iv Company:
Nevesbu
Market:
Maritime
Submarket:
Submarines
Client:
-
Continent:
Europe
Country:
The Netherlands
Residence:
-
In cooperation with:
-

Volume Estimation Tool (VET)

 
 
Iv Company: Nevesbu
Market: Maritime
Submarket: Submarines
Client: -
Continent: Europe
Country: The Netherlands
Residence: -
In cooperation with: -

When designing a submarine, one of the most important design requirements is achieving neutral buoyancy. An accurate estimate of the weight and volume of a design is of great importance when evaluating the buoyancy of a submarine design. Nevesbu has developed a special tool, named the Volume Estimation Tool (VET), with which a suitable starting point for the main dimensions, volume and sub-volumes of a diesel-electric submarine can be quickly determined in the early design phases. In 2017, the tool has won a Dutch maritime innovation award.

When it comes to volume estimation, the main challenge is the lack of reference data available. Much of the information that is available to the public is unreliable. However, if the data is all falsified in the same manner, it is possible to distinguish a trend in the data which can be considered valid despite the inaccuracy of the reference data itself. This is done using the Theil-Sen regression method. A trend line can be created by calibrating the trend found by using this method to the value of a known submarine design. The advantage of using this method is that it becomes possible to give the obtained values meaning, as the implicit design choices of the calibration design are known.

The estimation of principal dimensions requires a different approach. Principal dimensions are determined by the dimensions of critical objects inside the pressure hull. It is done in this way because the geometric requirements cannot be directly scaled due to the internal arrangement. When comparing different submarine designs, a pattern of common critical items can be distinguished. By parameterising the dimensions of the critical item, the minimum required local pressure hull diameter can be determined. This is where the volume estimation is integrated into the geometric estimation.

Learn more abotut the Volume Estimation Tool in this video.